Shure Black Cardioid Boundary Microphone Less Preamp (MX391/C)

With slim design and superior audio reproduction, the Microflex MX391, MX392 and MX393 Boundary microphones are the ideal conference room solution. Features include programmable, silent membrane switches, interchangeable cartridges, logic inputs and outputs, and LED indicators – Microflex Boundary microphones provide high-quality sound for a wide range of applications.

MX391/C (Cardioid): Miniature Black Condenser Boundary Microphone, In-Line Preamp, 12 foot (4 metre) Attached Cable to 4-Pin Mini Connector

There's never been smarter boundary microphones than the Microflex models from Shure. With many models to choose from, equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, Microflex Boundary microphones are the high-quality solution for a range of applications, such as altars, boardrooms and distance learning centers. Every Microflex Boundary microphone features one of the new interchangeable condenser cartridges. Available in cardioid, supercardioid and omnidirectional polar patterns, the Microflex cartridges give you superior Shure quality sound options for every installation. In addition, their programmable switches offer the flexibility to be set for Push to Talk, Push to Mute or Push On/Push Off modes. Attractively designed with a low profile, professional appearance, the Microflex Boundary microphones come with an easy to use paint mask for your custom-color installations. 

SPECIFICATIONS

• Transducer Type: Condenser
• Polar Pattern: Half-Cardioid, Half-Supercardioid, Half-Omnidirectional
• Frequency Response: 50 Hz - 17 kHz
• Sensitivity (1 kHz):
      Half-Cardioid: -29,6 dBV/ Pa/ 33,5 mV/ Pa
      Half-Supercardioid: -28,3 dBV/ Pa/ 28,3 mV/ Pa
      Half-Omnidirectional: -21,5 dBV/ Pa/ 81,4 mV/ Pa
• Equivalent Selfnoise:   
      Half-Cardioid: 22,6 dB(A)
      Half-Supercardioid: 21,3 dB(A)
      Half-Omnidirectional: 14,5 dB(A)
• Sound Pressure:
      Half-Cardioid: 118,8 dB
      Half-Supercardioid: 117,5 dB
      Half-Omnidirectional: 110,7 dB